grade 9 algerbra HELP!!!! PLZ!!!
posted by emily .
betty is now three times as old as mike, but in five years she will be only twice as old as mike. how old is mike right now?
i don't get what your suppose to do

NOW:
MIke  x
Betty  3x
In 5 Years:
MIke  x+5
Betty  3x+5
but it said: (3x+5) = 2(x+5)
solve for x 
x=3y
and
x+5=2y
solve for y in 1st and carry to 2nd eq
y=x/3
x+5=2(x/3)
solve for x
check answer 
solve and comparison:
a)4x9y+4
6x+15y=13
im so lost!!!!! 
mary is 4 and mike is 12